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ASoC: Dynamically manage DBVDD2 and DBVDD3 on WM5100 

Allow the DBVDD2 and DBVDD3 rails to be powered down when idle, helping
fully power down connected devices when idle.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-09-21 17:59:02 +01:00
parent ab6cf13943
commit 7aefb086c1
1 changed files with 81 additions and 1 deletions
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82
sound/soc/codecs/wm5100.c
View File

@ -54,6 +54,8 @@ struct wm5100_priv {
struct regulator_bulk_data core_supplies[WM5100_NUM_CORE_SUPPLIES];
struct regulator *cpvdd;
struct regulator *dbvdd2;
struct regulator *dbvdd3;
int rev;
@ -803,6 +805,52 @@ static int wm5100_cp_ev(struct snd_soc_dapm_widget *w,
}
}
static int wm5100_dbvdd_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
struct regulator *regulator;
int ret;
switch (w->shift) {
case 2:
regulator = wm5100->dbvdd2;
break;
case 3:
regulator = wm5100->dbvdd3;
break;
default:
BUG();
return 0;
}
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
ret = regulator_enable(regulator);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable DBVDD%d: %d\n",
w->shift, ret);
return ret;
}
return ret;
case SND_SOC_DAPM_POST_PMD:
ret = regulator_disable(regulator);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable DBVDD%d: %d\n",
w->shift, ret);
return ret;
}
return ret;
default:
BUG();
return 0;
}
}
static void wm5100_log_status3(struct snd_soc_codec *codec, int val)
{
if (val & WM5100_SPK_SHUTDOWN_WARN_EINT)
@ -880,6 +928,10 @@ SND_SOC_DAPM_SUPPLY("CP2", WM5100_MIC_CHARGE_PUMP_1, WM5100_CP2_ENA_SHIFT, 0,
SND_SOC_DAPM_SUPPLY("CP2 Active", WM5100_MIC_CHARGE_PUMP_1,
WM5100_CP2_BYPASS_SHIFT, 1, wm5100_cp_ev,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("DBVDD2", SND_SOC_NOPM, 2, 0, wm5100_dbvdd_ev,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("DBVDD3", SND_SOC_NOPM, 3, 0, wm5100_dbvdd_ev,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("MICBIAS1", WM5100_MIC_BIAS_CTRL_1, WM5100_MICB1_ENA_SHIFT,
0, NULL, 0),
@ -1122,10 +1174,14 @@ static const struct snd_soc_dapm_route wm5100_dapm_routes[] = {
{ "AIF1RX8", NULL, "SYSCLK" },
{ "AIF2RX1", NULL, "SYSCLK" },
{ "AIF2RX1", NULL, "DBVDD2" },
{ "AIF2RX2", NULL, "SYSCLK" },
{ "AIF2RX2", NULL, "DBVDD2" },
{ "AIF3RX1", NULL, "SYSCLK" },
{ "AIF3RX1", NULL, "DBVDD3" },
{ "AIF3RX2", NULL, "SYSCLK" },
{ "AIF3RX2", NULL, "DBVDD3" },
{ "AIF1TX1", NULL, "SYSCLK" },
{ "AIF1TX2", NULL, "SYSCLK" },
@ -1137,10 +1193,14 @@ static const struct snd_soc_dapm_route wm5100_dapm_routes[] = {
{ "AIF1TX8", NULL, "SYSCLK" },
{ "AIF2TX1", NULL, "SYSCLK" },
{ "AIF2TX1", NULL, "DBVDD2" },
{ "AIF2TX2", NULL, "SYSCLK" },
{ "AIF2TX2", NULL, "DBVDD2" },
{ "AIF3TX1", NULL, "SYSCLK" },
{ "AIF3TX1", NULL, "DBVDD3" },
{ "AIF3TX2", NULL, "SYSCLK" },
{ "AIF3TX2", NULL, "DBVDD3" },
{ "MICBIAS1", NULL, "CP2" },
{ "MICBIAS2", NULL, "CP2" },
@ -2250,12 +2310,26 @@ static int wm5100_probe(struct snd_soc_codec *codec)
goto err_core;
}
wm5100->dbvdd2 = regulator_get(&i2c->dev, "DBVDD2");
if (IS_ERR(wm5100->dbvdd2)) {
ret = PTR_ERR(wm5100->dbvdd2);
dev_err(&i2c->dev, "Failed to get DBVDD2: %d\n", ret);
goto err_cpvdd;
}
wm5100->dbvdd3 = regulator_get(&i2c->dev, "DBVDD3");
if (IS_ERR(wm5100->dbvdd3)) {
ret = PTR_ERR(wm5100->dbvdd3);
dev_err(&i2c->dev, "Failed to get DBVDD2: %d\n", ret);
goto err_dbvdd2;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm5100->core_supplies),
wm5100->core_supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable core supplies: %d\n",
ret);
goto err_cpvdd;
goto err_dbvdd3;
}
if (wm5100->pdata.ldo_ena) {
@ -2432,6 +2506,10 @@ err_ldo:
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
wm5100->core_supplies);
err_dbvdd3:
regulator_put(wm5100->dbvdd3);
err_dbvdd2:
regulator_put(wm5100->dbvdd2);
err_cpvdd:
regulator_put(wm5100->cpvdd);
err_core:
@ -2458,6 +2536,8 @@ static int wm5100_remove(struct snd_soc_codec *codec)
gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
gpio_free(wm5100->pdata.ldo_ena);
}
regulator_put(wm5100->dbvdd3);
regulator_put(wm5100->dbvdd2);
regulator_put(wm5100->cpvdd);
regulator_bulk_free(ARRAY_SIZE(wm5100->core_supplies),
wm5100->core_supplies);